Intel BOXDB43LD - B43 Chipset Executive Series, Manual, Page: 53 / 92

Technical Reference
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2.2.2.5 Alternate Front Panel Power LED Header
Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front panel
header.
Table 23. Alternate Front Panel Power LED Header
Pin Signal Name In/Out Description
1 HDR_BLNK_GRN Out Front panel green LED
2 Not connected
3 HDR_BLNK_YEL Out Front panel yellow LED
2.2.2.6 Intel AMT “M” State LED
The board has an Intel AMT “M” state LED (red), located near the Channel A DIMM
socket. The “M” state is based on Intel ME status, as follows:
• M0 = Intel ME is in full control in S0
• M1 = Intel ME is in full control in S3-S5 for “out of bound” Intel manageability
• Moff = Intel ME is in sleep state after Intel ME timeout has occurred
Table 24. Intel AMT “M” State LED Behavior
Intel ME LED Sx/M1 Sx/Moff S0/M0
Enabled using AMTNVM LED blinks Off On
Disabled using AMTNVM Off Off On